Surf Forecasts:
Jaconé surf forecast from 25 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 6AM (local time) - 10ft (3.0m), 14s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 25 Aug, 6AM (local time) - 10ft (3.0m), 14s period, S swell with 3,163 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 6AM (local time) - 10ft (3.0m), 14s period with S swell.
Best Forecast Surf Conditions for Jaconé this week:
The surf forecast for Jaconé over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 25) at 6AM. The primary swell is predicted to be 3.0m and 14s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Jaconé in the next 16 days are 3.0m 14s and forecast to arrive on Tuesday (Aug 25) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Friday (Aug 28) at 12AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 25th Aug) | 10ft (3.0m) 14s |
| Best Surf | 6AM (Tue 25th Aug) | 10ft (3.0m) 14s |
| Most Powerful | 6AM (Tue 25th Aug) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Jaconé over the next 16 days.
The Lowdown
Right, let’s switch over to feet and miles, same forecast, same feel.
So we’ve got a solid run of Southern Ocean swell coming through with some excellent windows this week. The best of it lands on Tuesday and especially Wednesday.
Tuesday morning (25 August) at Jacone, the swell is a meaty 8 ft from the S with a long 14 second period. Water temp is about normal for the season. A light east breeze around 9 mph is keeping it cross-off and clean. The combined energy is pumping at 2698, so there’s real power in the water. This is a proper groundswell – lots of push, good shape, but 8 ft is expert territory. Not one for beginners. The afternoon stays clean but gets a little trickier with the tide.
Wednesday morning (26 August) is the absolute highlight. Swell is a solid 7 ft out of the S, still a nice 12 second period, and the wind goes dead calm, just 3 mph from the west. The energy is still high at 2105 and the water goes glassy. This is going to be magic. Crowds are possible, but for conditions like this it’s worth sharing the lineup. If you can only go once, go then.
Thursday (27 August) gets bumpy. The swell holds around 8 ft south, but the east breeze pushes 16 mph by the afternoon. Energy is still 2194, but the surface gets sloppy. Quality drops, so maybe have a lay-in.
Friday morning (28 August) is a nice change. Swell drops to 4 ft from the south, 12 second period, and we get a true offshore from the NE at 9 mph. Energy sits at 576. It’s clean and gentle offshore – smaller, but fun and a good option for all levels. Afternoon gets blown out.
Saturday and Sunday (29-30 August) bring a smaller ENE windswell: 6 ft to 7 ft in the mornings, but only an 8 second period. Light offshore NE at 6 mph keeps things clean early. Energy is 682-746. It’s punchy and short period – fine for a paddle, but not the quality of the groundswell.
Monday (31 August) starts glassy with 3 ft of east swell, but then a 22 mph west-southwest wind ruins the afternoon.
From Tuesday (1 September) through Saturday (5 September), it’s pretty grim. Onshore winds, messy conditions, and even when the swell hits 7 ft on Saturday with energy of 1169, it’s blowing 19 mph onshore. Better for kite surfing than paddling.
Sunday (6 September) brings some relief: 4 ft of SSW swell at 10 seconds, with a light east-southeast cross-off at 6 mph. Energy is 324, but clean. Surfable.
Monday (7 September) shows promise again – 3 ft of S groundswell, 13 second period, and a moderate NE offshore at 16 mph. Energy hits 701. Decent for the size, clean. This one’s a little further out, so it’s promising but not locked in.
The tail end fizzles into small, weak leftover swell around 3 ft and short period. Not much to write home about.
So, the standout to lock in is Wednesday morning the 26th – glassy, solid, clean S swell. That’s the session you want. The rest has moments but nothing compares.
Keep it salty,
Rusty
Short Range ForecastHeavy rain (total 44mm), heaviest during Thu morning. Warm (max 22°C on Wed morning, min 18°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 33°C on Sat afternoon, min 19°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||
Wave Height (m) Direction Period (s) | S 13 | S 14 | S 14 | S 13 | S 12 | S 15 | S 15 | S 14 | S 14 | S 13 | S 12 | S 12 | E 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | E 9 | ENE 8 |
Wave Graph | |||||||||||||||||||
2124 | 2698 | 2122 | 1783 | 1218 | 3107 | 2863 | 2167 | 1735 | 862 | 418 | 276 | 187 | 492 | 107 | 270 | 588 | 145 | 235 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | off | off | cross-off | off | off | cross-off | glassy |
High Tide | 00:52AM0.87m | 1:54PM1.00m | 1:22AM0.95m | 2:23PM1.03m | 1:49AM1.01m | 2:48PM1.04m | 2:16AM1.07m | 3:11PM1.04m | 2:45AM1.10m | 3:32PM1.02m | 3:16AM1.10m | 3:54PM0.98m | |||||||
Low Tide | 6:51AM0.08m | 7:18PM0.31m | 7:32AM0.01m | 7:54PM0.27m | 8:11AM-0.03m | 8:29PM0.23m | 8:49AM-0.05m | 9:04PM0.20m | 9:27AM-0.03m | 9:40PM0.19m | 10:06AM0.02m | 10:17PM0.19m | |||||||
— | 6:07 | — | — | 6:05 | — | — | 6:05 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | |
— | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:38 | — | |
mm | 3 | 2 | 1 | — | — | 1 | 8 | 26 | 3 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 19 | 20 | 20 | 22 | 22 | 21 | 20 | 20 | 20 | 26 | 26 | 21 | 31 | 33 | 25 | 31 | 29 | 25 |
Feels °C | 17 | 19 | 20 | 20 | 23 | 22 | 21 | 21 | 18 | 19 | 26 | 25 | 20 | 31 | 33 | 25 | 32 | 31 | 28 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 14 | S 14 | S 13 | S 12 | S 15 | S 15 | S 14 | S 14 | S 13 | S 12 | S 12 | S 11 | E 8 | SSE 10 | E 8 | E 9 | SSE 10 | E 8 |
2124 | 2698 | 2122 | 1783 | 1218 | 3107 | 2863 | 2167 | 1735 | 862 | 418 | 276 | 116 | 132 | 34 | 196 | 148 | 10 | 165 | |
Swell 2 Height (m) Direction Period (s) | S 16 | — | — | — | S 16 | — | — | ESE 6 | — | — | E 7 | — | — | S 11 | — | SSE 10 | SSE 10 | — | S 10 |
1106 | — | — | — | 868 | — | — | 27 | — | — | 72 | — | — | 58 | — | 10 | 10 | — | 2 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | E 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | 19 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | E 4 | E 5 | — | — | ESE 6 | E 6 | ESE 5 | E 5 | E 7 | E 7 | E 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | E 9 | ENE 8 |
— | — | 21 | 23 | — | — | 58 | 50 | 31 | 73 | 86 | 111 | 187 | 492 | 107 | 270 | 588 | 145 | 235 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 10 | 0 | 0 | 77 | 10 | 10 | 216 | 25 | 0 | 53 | 0 | 0 | 10 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Rio de Janeiro | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
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Information about the Jaconé Surf forecast
The above surf forecast table for Jaconé provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Jaconé can be found by selecting the local surf guide option on the grey menu. Our Jaconé surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Jaconé) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Jaconé may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Jacone is 14 km (9 miles) from the city of Saquarema. If you plan a holiday in Rio de Janeiro, look for hotels and other accommodation in Saquarema. Saquarema has rooms for a wide range of budgets as well as car hire and transport links.











